A once-in-a-generation opportunity on Key Biscayne's only

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Home For Sale

5 Harbor Pt

Key Biscayne, Florida 33149

Miami-Dade County

Waterfront: Yes

Community: Matheson Estates

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$26,000,000 3 br, 6.0 bath 10926 sq. ft. 0.000 acres

A once-in-a-generation opportunity on Key Biscayne's only private waterfront road, this extraordinary estate spans 28,800 square feet with 120 feet of pristine water frontage, a secluded sandy beach, and a private dock framing panoramic views of the Miami skyline. Offering 10,926 square feet of living space, the property delivers exceptional privacy alongside a striking contemporary design recognized as part of the esteemed Rosa de la Cruz Collection. Soaring 20-foot ceilings, sculptural architectural lines, and expansive, light-filled interiors create a dramatic backdrop for art, entertaining, or a visionary reimagining tailored to your lifestyle. A truly rare canvas in an irreplaceable location, with architectural plans available to transform it into the most exceptional residence in Key Biscayne.

Interior:
  • Bedrooms: 3
  • Baths: 6.0
  • Sq Ft: 10926
  • Year Built: 1954
  • Utilities: 
  • Fireplaces: 
  • Stories: 
  • Heat/AC: Central, Electric (Heating)
  • Garage: Driveway
Exterior:
  • Lot Size: 0.000 acre
  • Lot Dimensions: 
  • Waterfront: Yes
  • View Types: 
  • Yard: 
  • Siding: Block
  • Roof: Barrel, Flat
  • Property Taxes: $59,191
  • Swimming Pool: Yes
  • MLS #: A11921513
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Contact Information:
Beach Home For Sale in Key Biscayne, Florida
Listing Agent: Giulietta Ulloa, BHHS EWM Realty, 305-710-6620, 305-361-5600 Listing Site, Listing Status: Active
Copyright © 2025 Miami REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
Ad Number: 6901857
Viewed 63 times.
Updated: Feb 04, 2026

This property is a Home located at 5 Harbor Pt, Key Biscayne, Florida 33149, and is currently For Sale at $26,000,000. This Home has 3 bedrooms, 6.0 baths, 10926 sq ft.